Machine for grinding or sharpening corrugated-sheet-metal fasteners.



. W. H. RAY.

MACHINE FOR GRINDING 0R SHARPENING CORRUGATED SHEET METAL FASTENERS.

APPLICATION FILED AUG. 8, 1907.

Patented Apr. 29, 1913.

6 SHEETSSHEET 1.

COLllvMBlA PLANDCIRAPH (IO-.WASHINGTON, n. c,

w. H. RAY.

MACHINE FOR GRINDING OR SHARPENING CORRUGATED SHEET METAL FASTENERS.

NPPLIOATION FILED AUG. 8, 1907. 1,060,287.

Patented A r.'29, 1913.

6 SHBETSSEEBT 2.

W. H. RAY. MACHINE FOR GRINDING 0B. SHARPENING CORRUGATED SHEET METAL FASTENERS.

APPLICATION FILED AUG. 8, 1907.

Patented Apr.29, 1913.

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' W. H. RAY. MACHINE FOR GRINDING 0B. SHAEPENING CORRUGATED SHEET METAL- FASTENERS.

APPLICATION FILED AUG. 8,:1907.

Patented Apr. 29, 1913.

6 SHBBTS'SHEET 4.

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APPLICATION FILED AUG. 8, 1907.

Patented Apr. 29, 1913.

6 SHEETS-SHEET 5.

wLUMBlA PLANOGRAPH 60.,WASHINOTON. n. c

W. H. RAY. MACHINE FOR. GRINDING 0B. SHARPENING CORRUGATED SHEET METAL FASTENERS.

APPLICATION FILEI) AUG. 8. 1907. I

Patented Apr. 29, 1913.

6 SHEETSSHEET 6.

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IIiiI illlilllllill 27W @435, XIX WW WILLIAM H. BAY, OF ST. JOSEPH, MICHIGAN, ASSIGNOB, BY MESNE ASSIGNMENTS, TO SABANAG MACHINE 00., OF ST. JOSEPH, MICHIGAN, A. CORPORATION OF MICHIGAN.

Specification of Letters latent.

Patented Apr. 29, 1913.

Application filed August 8, 1907. Serial No. 387,601.

To all whom it may concern Be it known that I, WILLIAM H. RAY, a citizen of the United States of America, and resident of St. Joseph, Berrien county, Michigan, have invented a certain new and useful Improvement in Machines for Grinding or Sharpening Corrugated-Sheet-Metal Fasteners, of which the following is a specification.

My invention relates to machinery for sharpening the strip or ribbon of steel or sheet metal from which corrugated sheet metal fasteners are made. A machine of this character will sharpen the fasteners before they are cut off from the strip or ribbon of steel, and will provide the fasteners wit-h a sharpened edge of any suitable character, depending upon whether the fastener is to have a plain sharpened edge, or an edge composed of points with draw cutting or reentering edges between the same.

In a machine characterized by my invention, the strip or ribbon of steel, either plain or corrugated, is run through a machine having grinders adapted to engage opposite sides of the metal, and is drawn from the machine in a sharpened condition and coiled upon a reel or spool. The said grinders are mounted for delicate adjustment toward or away from the strip or ribbon of steel, so that the sharpened edge of the metal may be calculated to a nicety, according to the thickness and character thereof. The said grinders are operated by power, which is also true of the means for drawing the strip or ribbon of steel through the machine. The nature and advantages of my invention will, however, hereinafter more fully appear.

In the accompanying drawings, Figure 1 is a front elevation of a grinding machine, embodying the principles of my invention, adapted for sharpening a plain or straight strip of metal. Fig. 3 is a vertical section on line 83 in Fig. 1. Fig. 4 is an end elevation of the said machine. Fig. 5 is a detail sectional view showing the method of adjusting the grinder. Fig. 6 is a detail plan view of the grinders and feed wheels, showing the strip or ribbon of straight metal in place between the same. Fig. 7 is a detail elevation, on a larger scale, ofthe feed mechanism. Fig. 8 is a perspective of a portion of the ribbon of steel before the same is sharpened. Fig. 9 is a similar View showing the said strip Fig. 2 is a plan of the same.

or ribbon of steel after it is sharpened. Fig. 10 is a front elevation of a grinding machine embodying the principles of my invention, showing the same adapted for sharpening a corrugated strip or ribbon of steel. Fig. 11 is a plan of the machine shown in Fig. 10. Fig. 12 is an enlarged detail sectional view of the pulley mechanism on the driving shaft, showing the grinder arms in section. Fig. 13 is a perspective view of one of the t-runnions for supportlng the adjusting screws by which the grinding arms are moved toward and away from the strip of metal. Fig. 14: is an en larged detail perspective view, illustrating one of the adjustable gages for holding the ribbon in place while it is being sharpened.

As thus illustrated, and referring more particularly to Figs. 1 to 9 inclusive, and Figs. 12 and 13, it will be seen that my invention comprises an upright frame or body A, provided with a transverse upper cross piece a. The driving shaft B is mounted in the said frame or body at a point below, and is provided with driving pulleys Z). A pair of grinding wheels C, D, are rotatably mounted on the upper ends of the arms 0, d, which latter are swingingly or rotatably mounted on the shaft B. The third grinder or rotatable abrading wheel E is mounted upon the upper end of the arm 6, at the other-side of the strip of metal, said arms being likewise swingingly mount-ed on the shaft 13. Said shaft is provided with pulleys b b and the said grinder wheels are provided with similar pulleys c (Z 6 in the manner shown. The said upper pulleys are rigidly connected with their respective grinders or abrading wheels, and are connected by belts 0 (Z 6 with the said larger pulleys on the shaft B. In this way rotation of the said shaft is accompanied by the rotation of the said grinders or abrading wheels. The arms a, (Z, c, are provided with adjusting screws 0 d 6?, which respectively connect with the grinder arms 0, cl, 6, and which are provided with suitable trunnions, such as the trunnion F shown in Fig. 13, mounted upon the cross bar a. Hand wheels 0, (Z 6 are provided for cooperating with said screws in moving the said grinder whee-l arms toward and away from the strip or ribbon of steel, whereby accurate adjustment is afforded. A. guide way G is provided for taking the strip or ribbon of metal past the the two feed wheels together, and a sprocket.

gearing 2' connects the said shaft 2' with the reel or spool J. a

The coil of unsharpened material is carried by the reel or spool K, at the left of the machine. From this last mentioned spool or reel the strip of metal passes through the guide way G, thence through the grinder wheels to the guide way H, from the latterto the feed wheels I, and then to the spool or reel J. It will be seen, therefore, that the rotation of the shaft B produces the required rotation of the grinder wheels, as well as the desired feeding action of the strip or ribbon of steel. In this way the machine is automatic in character, the strip or ribbon of steel feeding automatically and obtaining a sharp edge by its passage through the ma chine. This will be understood more clearly by referring to Fig. 5, wherein it will be seen that the strip or ribbon of metal passes between and somewhat above the grinders or abrading wheels, so that the lower edge of said metal is given a double concave bevel, in the manner shown in Fig. 9. By means of the hand wheels 0*, d 6, as previously described, the said grinders or abrading wheels can be moved toward or away from the strip or ribbon of metal, and thus proper adjustment can be obtained with respect to different thicknesses and different kinds of metal. For example, as shown in Figs. 10

and 11, the construction is substantially the same as that previously described, except that the feed wheels K which correspond to the previously described wheels I, are corrugatedthat is to say, have corrugated peripheries. It will also be seen that in this machine, shown in Figs. 10 and 11, a similar set of feed wheels L is provided at the left of the machine, so that the metal is corrugated before it passesbetwcen the grinders. The wheels K then receive the corrugated or sharpened strip or ribbon of steel,,

and deliver the same to the power opera-ted reel or spool. In such case, the said grinders or abrading wheels may require a somewhat.

different adjustment from that which would be necessary for grinding or sharpening a The width of the straight strip of metal. metal will also determine the adjustment of the wheelsthat is to say, the said wheels may be separated more or less for different widths of metal. The said guide ways G, H,

have clamping. blocks 9, h, for engaging or holding the steel ribbon firmly in position,

there being a long strip 9 as illustrated, which extends from one guide way to the other to form one side thereof. These guides and their clamping blocks are suitably supported on the frame or body of the machine. The block g, h, are adjustable up and down, relatively to the long bar or guide strip 9 as shown more clearly in Fig. 14;. This strip has a flange g for supporting the strip or ribbon of metal. lVhile the grinders arein motion the blocks 9, h, prevent the said strip or ribbon of metal from being forced upwardly by the pressure of said grinders. This is illustrated more clearly in Fig. 5, wherein it will be seen that the gage g bears on top of the strip or ribbon of metal to prevent the same from rising.

lVith the construction shown in Fig. 7, it will be seen that the sprocket is frictionally secured to the shaft 2, thus providing a frictional feed for the strip or ribbon of metal. This will be more readily understood .by referring to Fig. 2, wherein it will be seen that the coil of sharpened metal on the spool or reel J becomes'constantly larger, so that the speed of the reel J must decrease as the metal becomes coiled thereon. The slippage or frictional feed between the sprocket i and the shaft i takes care of this I contingency, and thus the action of the feed mechanism is constant.

With the construction shown, it will be seen that each grinder or abrading wheel is mounted upon a shaft or arbor which is H adapted to move bodily about an axis 00- incident with the axis of the pulley wheel from which the pulley on the arbor of the grinder is driven. In other words, the axis about which the arms 0, (Z, 6, swing is co-inci- I separated opposite ends, and means for 2111-, tomatlcally sharpenmg one edge thereof as the same moves along.

2. In a machine of the class descr1bed,su1table instrumentalities adapted for supporting and feeding a flexible strip or ribbon of metal having separated opposite ends,

grinders or abrading wheels adapted to act on opposite sides of the lower edge of said strip or ribbon of metal, swinging arms upon which said grinders or abrading wheels are mounted, means for adjusting.

said arms to control the position of the grinders or abrading wheels relatively to the strip or ribbon of metal, and a driving shaft co-incident with the axis about which said arms and grinders swing.

3. In a grinding or sharpening machine,

a suitable frame or body, a driving shaft mounted thereon, a plurality of vertically disposed arms having their lower ends mounted on said shaft, abrading wheels provided wit-h arbors suitably mounted on the upper ends of said arms, adjusting mechanism connecting said arms with said frame or body, and means for passing a flexible strip or ribbon of metal between said abrading wheels.

i. A machine for grinding a strip or ribbon of metal, comprising a frame or body, a drive shaft mounted in the frame or body, three arms having their lower ends mounted on said shaft, a rotatable grinder wheel mounted on the upper end of each arm, adjusting mechanism connecting the arms with the frame, pulleys on said shaft, means for connecting said pulleys with said grinder wheels, feed mechanism operatively connected with said shaft and disposed in position to pull the strip or ribbon of metal through the machine and past the said grinder wheels with one wheel on one side of the strip and two on the other, and means for laterally supporting the said strip or ribbon of metal while the same is being ground or sharpened.

5. In a machine of the class specified, a plurality of grinding wheels for engaging opposite sides of the strip or ribbon of metal, mechanism for corrugating the said strip or ribbon of metal before the same passes into engagement with the said grinder wheels, and corrugated feed wheels for pulling the said strip or ribbon of metal through the machine.

6. In a machine of the class specified, means for sharpening or grinding a strip or ribbon of metal, and mechanism for automatically corrugating the same before it is sharpened or ground.

7. In a machine for the purpose set forth, a drive shaft, vertically disposed arms mounted on said shaft, a frame, trunnions mounted on said frame, adjusting screws extending through said trunnions and connected with the arms, hand wheels on said screws adapted for changing the positions of the arms, abrading wheels carried by said arms, said wheels having non-coincident but parallel axes and instrumentalities for passing a strip or ribbon of metal through the machine to be ground by said abrading wheels.

8. In a machine of the class specified, adjustable abrading wheels for engaging the opposite sides of the strip or ribbon of metal, said wheels having axes parallel wit-h said strip, feed mechanism for pulling the strip or ribbon of metal through the machine, and for coiling the sharpened portion there of, a driving shaft, power transmitting connection between said shaft and abrading wheels, and worm gearing between the said feed mechanism and the said shaft.

9. In a machine of the character specified, the combination of grinding mechanism, a respooler or recoiler for the sharpened metal, a feed mechanism driven at a constant speed, and a frictional connection for driving the respooler or recoiler, as set forth.

10. In a machine for sharpening strips or ribbons of metal, the combination of means for supporting a length of metal, with its opposite ends suitably disposed, means for moving said length of metal endwise, mechanism for automatically sharpening or grinding an edge of the metal as it moves along, means for coiling the sharpened strip, and a friction device for driving said coiling means.

Signed by me at St. Joseph, Michigan this 24th day of July 1907.

WILLIAM H. RAY.

Witnesses:

CHAs. W. STRATTON, JOSEPH KAATZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

